What kind of title is this?: Light Novel.
How many volumes are there?: 6 volumes are listed.
Where can I read it?: Reading links are listed for Official Site, Yen Press. Check availability in your region.

Synopsis

About The World’s Strongest Witch

When Rona manifests what seems to be a terribly useless skill, she’s considered an embarrassment to her family and gets kicked out of the house. With no money or food, she nears her darkest hour… when she suddenly figures out how to use her skill called “Internet.” It allows her to produce unlimited valuable items and even acquire rare equipment without participating in any events. With this skill of godlike knowledge, she can do anything she wants! (Source: Yen Press)

Action Comedy Fantasy